President Obama's plan to degrade and destroy the Islamic state poses a challenge for members of his own party, who have traditionally provided the anti-war voices in Congress. Saul Loeb/AP hide caption

itoggle caption Saul Loeb/AP

Paul Moccia of Atkinson, N.H., waits for New Hampshire Senate candidate Scott Brown to be endorsed by Mitt Romney at an event in Stratham, N.H., on July 2. Charles Krupa/AP hide caption

itoggle caption Charles Krupa/AP